Dumping scraper



Jan. 3L 1939. F. Rosi-AK DUMPING SGRMER Filed dat. 11, 193? INVENTOR KrY ALM W1K s 11o m n MWA K M Ffm,

I Patented Jan. 31, 1939 uNiTED STATES DUMPING SORAPER Y Frank Roshak,Tigarl,d Oreg.

Application October 11, 1937, Serial No. 168,435

4 Claims.

This invention relates to Scrapers and is especially adapted to be usedin connection with dump scrapers.

The primary object of the invention is to provide a locking means forholding the scraper blade against rotation.

Another object of the invention is to provide locking means so designedthat it can not be sprung out of place. In my new and improved lock thestrain against the lock by the turning action of the scraper istransferred directly to the frame of the machine and the locking barresists any bending action directed thereagainst.

A further object of my invention is to provide a locking means that canbe easily controlled from a distant point such as the tractor that maybe pulling the scraper.

Another object of my invention is to provide a locking means that willallow the scraper blade to revolve when the tractor and blade arereversed.

These and other incidental objects will be apparent in the drawing,specification and claims to follow.

Referring to the drawing:

Figure 1 is a side elevation of a well known type of dumping scraperhaving my improved lock mounted thereon.

Figure 2 is a plan view of Figure l.

Figure 3 is a fragmentary plan view of the tongue of the scraper, moreclearly illustrating part of the locking mechanism.

Figure 4 is a fragmentary detail sectional view, taken on line 4--4 ofFigure 2, looking in the direction indicated.

In the drawing:

I is a conventional revolving scraper hopper, having a cutting blade 2and cylindrical end 3. Scraper I is journaled to side bar members 4 offrame 5 by pins 5. Frame 5 is secured to a tongue 'I at its forward endand to the rear of the tongue by cross members 5A. Locking bars 8 arepivotally mounted to the frame at l) at their one end, and are pivotallyconnected to control rods Iil at their other ends. Control rods IIJ arepivotally connected at II to bosses I2, which are secured to a slidingrod I3. Rod I3 is slidably mounted in supporting guides I4. A boss I5 isalso formed as part of the bar I3 and it is connected to lever I5 by arod I'I. Lever I6 is pivotally mounted at I8 to an upwardly extendingbracket i9, said bracket, in turn being mounted to tongue l.

Referring to Figures l and 2, the end 1A of the tongue is assumed to befastened to the draw bar of the tractor, not here shown. The pull cord2l) from lever I6 extends to the tractor and in the event it is desiredto unlock the scraper permitting the blade 2 to revolve the cord 2U ispulled forward rocking lever I6 upon its pivot 5 support I8 pulling therod I1 and slide rod I3 to the right, this moves outwardly the rods orconnecting links I0 unlocking the bars 8 from the stop 2l, permittingthe blade I to revolve. A spring 22 is also connected to the boss I5 and10 to the frame at 23 and is for the purpose of returning the lockingmechanism to the position shown in Figures 1 and 2.

Referring to Figure 4, a guiding bracket 24 is mounted to the frame 5 bythe bolt 25 and is 15 hooked under the frame 5A as shown at 26. Theguiding bracket guides the locking bars 8 upon the frame. The stops 2|have a cam surface 2 IA permitting the Scrapers to be revolved backwardswithout manipulating the lever I 6, the cams 20 moving the locking barsoutwardly when the scraper is revolved backwardly, or to the rightviewing the several gures of the drawing. Normally the forward faces ofstops 2| engage the locking bars 8 and prevent forward rotation of 25the scraper until such bars are moved out of engagement therewith byrocking lever I6 as heretofore explained.

As stated before the locking bars rest firmly on the upper surface ofthe frame at pivot point 30 9 and at points intermediate their lengths.This solid support forms a rigid stop for the stops 2l.

I do not wish to be limited to this particular form of construction asdifferent mechanical variations may be used still coming within thescope 35 of the claims to follow.

I claim:

l. In a scraper, a scraper body, a frame journaled thereto having atongue, locking bars pivoted to lateral extremities of the frame, a mem-40 ber slidably connected with the tongue, connecting members betweenthe slidable member and locking bars whereby when the slidable membermoved rearwardly the locking bars are pivoted outwardly and when themember is moved for- 45 wardly the locking bars are pivoted inwardly,means yieldably normally holding the member and locking bars in thelatter position, means for moving the slidable member against the actionof the yieldable means, and stops mounted to the 50 scraper bodyengaging locking bars when positioned inwardly and preventing forwardrotation of the scraper body.

2. In a scraper, a scraper body, a frame journaled thereto having atongue, locking bars piv- 55 oted to the frame and pivotaily riding onsaid frame, a guideway in the tongue, a member slidable in suchguideway, connecting members between slidable member and locking barswhereby when the slidable member is moved rearwardly the locking barsare pivoted outward, and when the member is moved forwardly the lockingbars are pivoted inwardly, and stops mounted to the scraper bodyengaging locking bars when in inward position and preventing forwardrotation of the scraper body.

3. In a scraper, a scraper body, a frame journaled thereto having atongue, locking bars pivoted upon the frame, a member slidably supportedby the tongue, connecting means between slidable member and locking barswhich when the slidable `connected thereto for sliding it to rearwardposition.

FRANK ROSHAK.

